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Quantum confinement effects for light emission in perovskites / submitted by Stepan Demchyshyn
AuthorDemchyshyn, Stepan
CensorScharber, Markus
PublishedLinz, 2018
Description84 Blätter
Institutional NoteUniversität Linz, Masterarbeit, 2018
In Zusammenarbeit mit dem Institut für Physikalische Chemie
Document typeMaster Thesis
Keywords (EN)quantum / confinement / perovskite / led / light
Keywords (GND)Perowskit / Quantenpunkt / Metalloxide / Tieftemperaturspektroskopie / Lumineszenzdiode
URNurn:nbn:at:at-ubl:1-22550 Persistent Identifier (URN)
 The work is publicly available
Quantum confinement effects for light emission in perovskites [15.71 mb]
Abstract (English)

Research in halide perovskites has been dominated over the last few years by solar cells, now also includes a growing focus on this materials light emitting properties. Halide perovskites are an appealing group of materials due to their high performance, simple synthesis route, and low price. Recent advances in colloidal perovskite quantum dot synthesis allow to easily tune optical and electronic properties based on quantum size effects. In this work, a new method utilizing porous oxide materials is investigated for lead based hybrid organic-inorganic perovskite quantum dot preparation. Optical properties of perovskites confined in porous oxide matrices are studied and correlated with their detailed structural analysis. The behavior of charge carriers in this new material is investigated via low temperature spectroscopy. Light Emitting Diodes (LEDs) based on the material are prepared. Additionally, a non-lead based perovskite material is investigated as a potential non-toxic alternative quantum confined material.This new approach to perovskite quantum dot synthesis opens up further compelling avenues for research on the fundamental properties of quantum confined particles as well as development of new optoelectronic devices.

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